con·​firm | \ kən-ˈfərm How to pronounce confirm (audio) \
confirmed; confirming; confirms

Definition of confirm

transitive verb

1 : to give approval to : ratify confirm a treaty
2 : to make firm or firmer : strengthen confirm one's resolve
3 : to administer the rite of confirmation to
4 : to give new assurance of the validity of : remove doubt about by authoritative act or indisputable fact confirm a rumor confirm an order

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Other Words from confirm

confirmability \ kən-​ˌfər-​mə-​ˈbi-​lə-​tē How to pronounce confirmability (audio) \ noun
confirmable \ kən-​ˈfər-​mə-​bəl How to pronounce confirmable (audio) \ adjective

Choose the Right Synonym for confirm

confirm, corroborate, substantiate, verify, authenticate, validate mean to attest to the truth or validity of something. confirm implies the removing of doubts by an authoritative statement or indisputable fact. confirmed the reports corroborate suggests the strengthening of what is already partly established. witnesses corroborated his story substantiate implies the offering of evidence that sustains the contention. the claims have yet to be substantiated verify implies the establishing of correspondence of actual facts or details with those proposed or guessed at. all statements of fact in the article have been verified authenticate implies establishing genuineness by adducing legal or official documents or expert opinion. handwriting experts authenticated the diaries validate implies establishing validity by authoritative affirmation or by factual proof. validated the hypothesis by experiments

Examples of confirm in a Sentence

The tests confirmed the doctors' suspicions of cancer. The attack confirmed her worst fears about the neighborhood. The award confirmed her status as one of the great movie actresses. The dentist's office called to confirm your appointment for tomorrow. We have a reservation for you for tomorrow night. Please call to confirm.
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Recent Examples on the Web Editor's note: The story has been updated with the news that Moderna has confirmed the start of its phase two trial. National Geographic, "The promise of mRNA vaccines is changing how we think about COVID-19 immunization.," 29 May 2020 In the days following, 53 more people—or 87% of the group—were identified as having COVID-19, including 33 confirmed and 20 probable cases. Maggie O'neill,, "Can Talking Spread COVID-19? Here’s What You Need to Know," 26 May 2020 Joshua Safran, who wrote and executive-produced the original show, confirmed this at Vulture Festival on November 10. Julyssa Lopez, Glamour, "The Gossip Girl Reboot: Everything We Know So Far," 23 May 2020 The inspectors general are appointed by the president and confirmed by the Senate. Stanley M. Brand, The Conversation, "Congress may not like it when Trump fires an inspector general – but it can’t do anything to stop him," 22 May 2020 However, in California's northern Yuba and Sutter counties, where there are fewer confirmed COVID-19 cases, tattoo parlour doors are allowed to open. Aimee Simeon,, "Cardi B Just Revealed A New Back Tattoo — & It’s Huge," 21 May 2020 The teaser image shows a TLX Type S with wide rear fenders, rear diffuser, and quad-tip exhaust, but most noticeably is the SH-AWD badge, confirming the high-performance model will get Acura's effective Super Handling All-Wheel Drive system. Connor Hoffman, Car and Driver, "Hear 2021 Acura TLX Type S's New Turbo V-6 Ahead of Next Week's Reveal," 20 May 2020 Dallas signed nine-year veteran Andy Dalton to a one-year contract worth $7 million, with $3 million of it guaranteed, a person with knowledge of the situation confirmed. Mike Jones, USA TODAY, "Veteran quarterback Andy Dalton signs 1-year deal with Dallas Cowboys," 3 May 2020 In fact, a tweet confirming that the clinic had told Pence this mysteriously disappeared after his visit. Graeme Mcmillan, Wired, "While You Were Offline: Where's Your Mask, Mike Pence?," 3 May 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'confirm.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of confirm

13th century, in the meaning defined at sense 1

History and Etymology for confirm

Middle English, from Anglo-French cunfermer, from Latin confirmare, from com- + firmare to make firm, from firmus firm

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Time Traveler for confirm

Time Traveler

The first known use of confirm was in the 13th century

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Statistics for confirm

Last Updated

3 Jun 2020

Cite this Entry

“Confirm.” Dictionary, Merriam-Webster, Accessed 3 Jun. 2020.

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More Definitions for confirm


How to pronounce confirm (audio)

English Language Learners Definition of confirm

: to state or show that (something) is true or correct
: to tell someone that something has definitely happened or is going to happen : to make (something) definite or official
formal : to make (something) stronger or more certain : to cause (someone) to believe (something) more strongly


con·​firm | \ kən-ˈfərm How to pronounce confirm (audio) \
confirmed; confirming

Kids Definition of confirm

1 : to make sure of the truth of Their arrest confirms my suspicion.
2 : to make firm or firmer (as in a habit, in faith, or in intention) : strengthen The job at the shelter confirmed her intention to become a veterinarian.
3 : approve sense 2, accept Senators confirmed the treaty.
4 : to perform a ceremony admitting a person into a church or synagogue

Legal Definition of confirm

1a : to make valid by necessary formal approval the debtor's chapter 13 plan confirmed by the court
b : to vote approval of confirm a nomination
2 : to give formal acknowledgment of receipt of
3 : to remove doubt about by authoritative act or indisputable fact a consent decree confirming Capt. Brown's right to his cargo— W. G. Young

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More from Merriam-Webster on confirm

Thesaurus: All synonyms and antonyms for confirm

Rhyming Dictionary: Words that rhyme with confirm

Spanish Central: Translation of confirm

Nglish: Translation of confirm for Spanish Speakers

Britannica English: Translation of confirm for Arabic Speakers

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